<template>
  <div class="app">
    <h3>我是App组件</h3>
  </div>
</template>
<script>
import {
  ref,
  reactive,
  toRefs,
  readonly,
  isRef,
  isReactive,
  isReadonly,
  isProxy,
} from 'vue'
export default {
  name: 'App',
  setup() {
    let car = reactive({
      name: '奔驰',
      price: '40w',
    })
    let sum = ref(0)
    let car2 = readonly(car)
    console.log(isRef(sum)) //true
    console.log(isReactive(car)) //true
    console.log(isReadonly(car2)) //true
    console.log(isProxy(car)) //true
    console.log(isProxy(sum)) //false
    return {
      ...toRefs(car),
    }
  },
}
</script>
<style>
.app {
  background-color: gray;
  padding: 10px;
}
</style>